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Indian Institute of Technology, Kharagpur

Soil And Water Conservation Engineering

Indian Institute of Technology, Kharagpur and NPTEL via Swayam


ABOUT THE COURSE:The course deals with the engineering principles involved in soil and water conservation. It includes the classification of the water erosion, and the agronomical and engineering measures adopted for erosion control. The design of bunds and terraces are dealt in detail, followed by gully control measures. The wind erosion and measures to control it, e.g., the windbreaks and shelterbelt, are also included. Many examples and problems are included to emphasize the design principles and to facilitate an understanding of the subject matter. Computer models will be described where applicable.INTENDED AUDIENCE: Agricultural EngineeringPREREQUISITES: NILINDUSTRY SUPPORT:NIL


Week 1: Soil erosion - introduction, causes and types;Geological and accelerated erosion; Erosion agents;Factors affecting and effects of erosion.
Week 2: Water erosion - Mechanics and forms; Gullies –Classification & stages of development
Week 3: Soil loss estimation – Universal soil loss equation(USLE) and modified USLE; Rainfall erosivity -estimation by KE>25 and EI 30 methods; Soil erodibility and other management factors.
Week 4: Measurement of soil erosion - Runoff plots, soil samplers.
Week 5: Water erosion control measures - agronomical measures - contour farming, strip cropping, conservation tillage and mulching; Engineering measures– Bunds and terraces.
Week 6: Bunds - contour and graded bunds - design and surplussing arrangements
Week 7: Terraces - level and graded broad base terraces, bench terraces - planning, design and layout procedure, contour stonewall and trenching.
Week 8: Gully and ravine reclamation - principles of gully control - vegetative measures, temporary structures and diversion drains.
Week 9: Grassed waterways and design
Week 10: Wind erosion- Factors affecting, mechanics, soil loss estimation and control measures - vegetative,mechanical measures.Week 11: Design of wind breaks and shelter belts and stabilization of sand dunes
Week 12: Land capability classification. Rate of sedimentation, silt monitoring and storage loss in tanks.

Taught by

Prof. Rajendra Singh

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